Flexible pipe-joint.



No. 897,461. PATENTBD SEPT. 1, 1908.

' W. A. GREENLAW n H. A. ROYCE.

' FLEXIBLE PIPE JOINT. APPLIUATION IILBD AUG.1G,1B07.

UNITED STATQES PATENT OFFICE.

WARREN ALFREDGREENLAW, OF MELROSE HIGHLANDS, AND HARRISON4 A. ROYCE, OF BOSTON, MASSACHUSETTS, ASSIGNORS TO THE GREENLAW MANUFACTURING CO., OF BOSTON, MASSACHUSETTS, A CORPORATION OF MAINE.

FLEXIBLE PIPE-JOINT.

No. 897,461. Specication of Letters Patent. Patented Sept. 1, 1908. Application led. Augiilt 16, 1901. Serial No. 888,861.

To all whom 'it may concern: prevent its displacement from the ring 15 55 Be it known that we, WARREN ALFRED when'the ball 14is forced inwardly. Mount- GaEENLAw and HAaarsoN A. ROYCE, citied'upon the aeking ring 20 is an annular zens of the United States of America, and rin 21 provi( ed with a wedge-shaped edge 5 residents, respectively, of Melrose Higli- 22 aving beveled sides which is adapted to lands, in the county of Middlesex, and Bosbe pressed into the packing '2O to spread the 60 ton, in the county of Suffolk, both in the same and force the packing into firm con- State of Massachusetts, have invented certact with the exterior surface of the ball 14 tain new and useful Improvements in Flexito make an effectual seal to prevent leakage l0 ble Pipe-Joints, of which the following is a from the chamber 12.

specification. Superimposed upon the ring 2l is a lol- G5 This invention relates to flexible pipe lower, and inter osed between the follower joints and has for its object thc production 23 and the annu ar member l? is a spring 24 of a suitable means for packing the joint which tends to retain the follower 23 and 15 between the two pipe members so that eakring ll in their normal positions and under age is prevented as the material llows from extraordinary conditions to still further 70 one pipe member to the other. force the wedge-shaped edge .22 into the 'lhe invention consists in certain novel packing 2() thereby securing an effectual features of construction and arrangement seal as heretofore stated under all conditions.

of parts which will be readily understood by It is obvious that should any of the marcfcrcncc. to thc description of the drawings terial passing through the pipe members l() 75 and to the claims hereinafter given. and 13 pass into the chamber and endeavor Of the drawings: Figure l represents a to ass between the exterior walls of the plan of a pipe joint em odying the features bal 14 and its seat 16 this material would of this invention. Fig. 2 represents a vertend to act u on the follower 23 to force the tical section, the cutting plane being on line wedge-shape( edge into the packing 20 with 80 .Z-'.Z on Fig. l. Fig. 3 represents a transthe result that a portion of said packing verse section, the cutting plane being on would be wedged so firiiil against the. surline 3-3 on Fig. 2, and Fie. 4 represents an face of the ball 14 that t ie passage of the enlarged sectional detail sliowing the packmaterial 'between the two would be. absoiiig and the means for retaining the packing lately prevented. 85

in the ball seat and means for increasing the The annular inwardly extending li i if) refrictional Contact between the' packing and tains the packing 20 in position at all times the. exterior surface of the ball. and prevents it from entering between the Similar characters designate like )arts exterior surface of the ball 14 and its seat ll.

throughout the several figures of the t raw- It is obvious that any material which cn- 00 ings. ters the chamber l2 will act upon the fol- In the drawings, l() represents a pipe lower 23 to force the ring 2l into the packing member provided with a cup-shaped end 20 to more eflectuallyseal the joint. This 40 1l made integral therewith and having an makes a very effectual means of packing a interior cham )er l2. The tio-acting )ipe joint of this class and is adapted to operate 95 member 13 is provided with a ball end 14 at any desired angle. which is ada ited to enter the chamber l2 1t is believed that the operation of the inof said cup-sliaped member. Threaded to vention aml the many anlvantages thereof the end of' said cup-shaped member ll is a will be fully apparent without further dccap l5 provided with a seat lf'i for said ball scri ition. ioo end i4, this scat I6 preventing the outward l aving thus described our invention, we movement of said pi )e member i3. claim:

Within the chum ier l2 is au annular l. ln allexible pipejoint. theeombiimlion member I7 provided with a tubular stoi IS of a ipe member provided with a cupto limit the inward movement ofthe. bal l-f. shaped end; a second pi ie member having a los 'lhc cap l5 is provided with an inwardly ball-shaped end adapted to cuter said eupextending lip lf) having an inclined wiill shaped end; a cui threaded lo said cupadapted to engage the packing ring 2() and shaped end provi( ed willi an inwardly extending flange having a rearwardly extending lip the inner wall of which has a groove therein; and an annular packing ring held in position by said lip.

5 2. In a flexible pipe oint, the combination of a ipe member provided with a cupshaped) end; a second pi e member having a ball-shaped end ada te to enter said cupsha ed end; a seat 'or said ball secured to sai cup-shaped end; a packing inter osed between said ball and the walls of sai cupshaped end; a ring with beveled edges bearing u on said packing; and a spring for forcing tie beveled edges of said ring into said packing.

3. In a flexible pipe oint, the combination of a ipe member provided lwith a cupsha ed) end; a second pi e member having a vbal -shaped end ada te to enter said cupsha ed end a seat or said ball secured to sai( cup-shaped end; a packing interposed between said ball and the walls of said cupshaped end; a ring with beveled edges bearing upon said packing; a spring for forcing the beveled edges of said ring into said packing; and an anntlar follower between said ring and s ring. I

4. In a` exible pipe joint, the combination ,of a (pipe member provided; with a cupsha e bal -shaped end adap t0 enter said ou pend; a second p'i e member having a' sha ed end; a seat for said ball secured to sai cup-shaped end; a packing inter osed between said ball and the walls of sait cupshaped end a ring with beveled edges bearing upon said packing; a spring for forcing the beveled edges of said ring into said packing; an annular follower between said ring and spring; and a removable annular ball stop interposed between said spring and the bottom wall lof the chamber in said cupshaped end.

5. In-a flexible pipe joint, the con'ibination of a (pipe member provided with a cupshape end; a second pipe member having a ball-shaped end ada ted to enter said cupsliaped end a seat ier said ball secured to sai( cup-shaped end; a packing inter osed between said ball and the walls of sai( cupshapcd end; a rin with beveled edges bearing upon said acIiing; and yieldable means for forcing sai ring outwardly to permit the beveled edges thereon to force said packing against the outward face of said ball.

Signed by us at Boston, Mass., this 13th day of August, 1907. f

WARREN ALFRED GREENLA-W. HARRISON A. ROYCE.

Witnesses: i WALTER E. LOMBARD, NATI-IAN C. LOMBARD. 

